4 papers
50 Dra: Am-type twins with additional variability in a non-eclipsing system
M. Skarka, J. Lipták, E. Niemczura +5
The interplay between radiative diffusion, rotation, convection, and magnetism in metallic-line chemically peculiar stars is still not fully understood. Recently, evidence has emer…
TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system
Michaela VÃtková, Rafael Brahm, Trifon Trifonov +24
We present a joint analysis of TTVs and Doppler data for the transiting exoplanet system TOI-4504. TOI-4504 c is a warm Jupiter-mass planet that exhibits the largest known transit…
Five new eclipsing binaries with low-mass companions
J. Lipták, M. Skarka, E. Guenther +18
Precise space-based photometry from the Transiting Exoplanet Survey Satellite results in a huge number of exoplanetary candidates. However, the masses of these objects are unknown…
Chemically peculiar stars on the pre-main sequence
L. KueÃ, E. Paunzen, N. Faltová +12
Context. The chemically peculiar (CP) stars of the upper main sequence are defined by spectral peculiarities that indicate unusual elemental abundance patterns in the presence of d…